| Abbreviation | Definition |
|---|---|
| ATRRS | Army Training Requirements and Resources |
| ATRWG | Automatic Target Recognizer Working Group |
| ATS | Across The Scope |
| ATS | Advanced Tracking Sensor |
| ATS | Air Traffic Service |
| ATS | Air Traffic Services |
| ATS | Airborne Tactical SIGINT |
| ATS | Annual Training Site |
| ATS | Anti-Terrorist Squad |
| ATS | Assign Terminal Service |
| ATS | Automatic Transfer Switch |
| ATS | Auxiliary Territorial Service |
| ATSA | Army Technical Support Agency |
| ATSC | Army Training Support Center |
| ATSD(AE) | Assistant to The Secretary of Defense (Atomic Energy) |
| ATSD(IO) | Assistant to The Secretary of Defense (Intelligence Oversight) |
| ATSD(NCB) | Assistant to The Secretary of Defense For Nuclear and Chemical and Biological Defense Programs |
| ATSE | Advanced Targeting Sensor Evaluation |
| ATSO | Ability To Survive and Operate |
| ATSO | Advanced Training and Security Organization |